“The USA law clearly states that in a situation in which a police officers fears for his or her life or the life of other people he or she is allowed to use his or her gun to protect himself or herself and the others.”
Maybe it’s because you aren’t a Black person living in the US as I am, but I see you’re missing the point of my previous response. Random juries almost always deem the deaths of Black people at the hands of the police as being justified (no matter whatever evidence is available), but Black males are invariably seen as more threatening and menacing than other groups (white women, for example). Most of the high-profile police killings of unarmed Black men have always included an officer saying they were in fear for their life when there was no obvious threat.
I haven’t watched the video of the Philando Castile murder, but I did listen to audio of the encounter. The officer was clearly very frightened, and I would say irrationally so. The case of Betty Shelby is another. She looked at her victim (whose name I can’t recall), saw a tall Black man, and shot him to death because she was afraid of him. The jury thought her irrational fear of tall Black men was justification enough, so they excused her of her murder.
American society developed with fear of Black men in its blood, and this has been the case for hundreds of years. Instead of learning “the USA law”, you need to learn the history of racial relations of this country, and it’s treatment of Black males in particular. I don’t need a database of statistics to reveal to me my own life experience in this country.